package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

/**
 * @Author:ZouChou
 * @Description:
 * @Date:Created in 16:04 2024/4/26
 * @Modified By:
 */
@Service
@Slf4j
public class UserServiceImpl implements UserService {
    //微信登录接口
    public static final String WX_LOGIN_URL = "https://api.weixin.qq.com/sns/jscode2session";

    @Autowired
    private WeChatProperties weChatProperties;

    @Autowired
    private UserMapper userMapper;



    /**
     *微信登录
     * @param userLoginDTO
     * @return
     */
    public User wxLogin(UserLoginDTO userLoginDTO) {
        //调用微信接口获取openid
        log.info("微信登录，openid为{}",userLoginDTO.getCode());
        Map<String, String> map = new HashMap<>();
        map.put("appid", weChatProperties.getAppid());
        map.put("secret", weChatProperties.getSecret());
        map.put("js_code", userLoginDTO.getCode());
        map.put("grant_type", "authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN_URL,map);

        JSON jsonObject =JSON.parseObject(json);
        String openid = ((JSONObject) jsonObject).getString("openid");
        //判断微信接口返回的openid是否为空
        if (openid == null)
        {
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        //判断当前用户是不是新用户
        User user = userMapper.getByOpenid(openid);

        //如果是新用户·创建新用户
        if (user == null)
        {
            user = User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            userMapper.insert(user);
        }

        //返回用户信息

        return user;
    }
}
